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yocto_longitude.py
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yocto_longitude.py
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#*********************************************************************
#*
#* $Id: yocto_longitude.py 23243 2016-02-23 14:13:12Z seb $
#*
#* Implements yFindLongitude(), the high-level API for Longitude functions
#*
#* - - - - - - - - - License information: - - - - - - - - -
#*
#* Copyright (C) 2011 and beyond by Yoctopuce Sarl, Switzerland.
#*
#* Yoctopuce Sarl (hereafter Licensor) grants to you a perpetual
#* non-exclusive license to use, modify, copy and integrate this
#* file into your software for the sole purpose of interfacing
#* with Yoctopuce products.
#*
#* You may reproduce and distribute copies of this file in
#* source or object form, as long as the sole purpose of this
#* code is to interface with Yoctopuce products. You must retain
#* this notice in the distributed source file.
#*
#* You should refer to Yoctopuce General Terms and Conditions
#* for additional information regarding your rights and
#* obligations.
#*
#* THE SOFTWARE AND DOCUMENTATION ARE PROVIDED 'AS IS' WITHOUT
#* WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING
#* WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, FITNESS
#* FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO
#* EVENT SHALL LICENSOR BE LIABLE FOR ANY INCIDENTAL, SPECIAL,
#* INDIRECT OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA,
#* COST OF PROCUREMENT OF SUBSTITUTE GOODS, TECHNOLOGY OR
#* SERVICES, ANY CLAIMS BY THIRD PARTIES (INCLUDING BUT NOT
#* LIMITED TO ANY DEFENSE THEREOF), ANY CLAIMS FOR INDEMNITY OR
#* CONTRIBUTION, OR OTHER SIMILAR COSTS, WHETHER ASSERTED ON THE
#* BASIS OF CONTRACT, TORT (INCLUDING NEGLIGENCE), BREACH OF
#* WARRANTY, OR OTHERWISE.
#*
#*********************************************************************/
__docformat__ = 'restructuredtext en'
from yocto_api import *
#--- (YLongitude class start)
#noinspection PyProtectedMember
class YLongitude(YSensor):
"""
The Yoctopuce class YLongitude allows you to read the longitude from Yoctopuce
geolocalization sensors. It inherits from the YSensor class the core functions to
read measurements, register callback functions, access the autonomous
datalogger.
"""
#--- (end of YLongitude class start)
#--- (YLongitude return codes)
#--- (end of YLongitude return codes)
#--- (YLongitude dlldef)
#--- (end of YLongitude dlldef)
#--- (YLongitude definitions)
#--- (end of YLongitude definitions)
def __init__(self, func):
super(YLongitude, self).__init__(func)
self._className = 'Longitude'
#--- (YLongitude attributes)
self._callback = None
#--- (end of YLongitude attributes)
#--- (YLongitude implementation)
def _parseAttr(self, member):
super(YLongitude, self)._parseAttr(member)
@staticmethod
def FindLongitude(func):
"""
Retrieves a longitude sensor for a given identifier.
The identifier can be specified using several formats:
<ul>
<li>FunctionLogicalName</li>
<li>ModuleSerialNumber.FunctionIdentifier</li>
<li>ModuleSerialNumber.FunctionLogicalName</li>
<li>ModuleLogicalName.FunctionIdentifier</li>
<li>ModuleLogicalName.FunctionLogicalName</li>
</ul>
This function does not require that the longitude sensor is online at the time
it is invoked. The returned object is nevertheless valid.
Use the method YLongitude.isOnline() to test if the longitude sensor is
indeed online at a given time. In case of ambiguity when looking for
a longitude sensor by logical name, no error is notified: the first instance
found is returned. The search is performed first by hardware name,
then by logical name.
@param func : a string that uniquely characterizes the longitude sensor
@return a YLongitude object allowing you to drive the longitude sensor.
"""
# obj
obj = YFunction._FindFromCache("Longitude", func)
if obj is None:
obj = YLongitude(func)
YFunction._AddToCache("Longitude", func, obj)
return obj
def nextLongitude(self):
"""
Continues the enumeration of longitude sensors started using yFirstLongitude().
@return a pointer to a YLongitude object, corresponding to
a longitude sensor currently online, or a None pointer
if there are no more longitude sensors to enumerate.
"""
hwidRef = YRefParam()
if YAPI.YISERR(self._nextFunction(hwidRef)):
return None
if hwidRef.value == "":
return None
return YLongitude.FindLongitude(hwidRef.value)
#--- (end of YLongitude implementation)
#--- (Longitude functions)
@staticmethod
def FirstLongitude():
"""
Starts the enumeration of longitude sensors currently accessible.
Use the method YLongitude.nextLongitude() to iterate on
next longitude sensors.
@return a pointer to a YLongitude object, corresponding to
the first longitude sensor currently online, or a None pointer
if there are none.
"""
devRef = YRefParam()
neededsizeRef = YRefParam()
serialRef = YRefParam()
funcIdRef = YRefParam()
funcNameRef = YRefParam()
funcValRef = YRefParam()
errmsgRef = YRefParam()
size = YAPI.C_INTSIZE
#noinspection PyTypeChecker,PyCallingNonCallable
p = (ctypes.c_int * 1)()
err = YAPI.apiGetFunctionsByClass("Longitude", 0, p, size, neededsizeRef, errmsgRef)
if YAPI.YISERR(err) or not neededsizeRef.value:
return None
if YAPI.YISERR(
YAPI.yapiGetFunctionInfo(p[0], devRef, serialRef, funcIdRef, funcNameRef, funcValRef, errmsgRef)):
return None
return YLongitude.FindLongitude(serialRef.value + "." + funcIdRef.value)
#--- (end of Longitude functions)

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